nilbuild/slim ? reverse-engineered prompt

Build me a small command line tool that makes local development feel easy by giving each project a clean HTTPS domain on my machine.

I want to be able to run something like start myapp --port 3000 and have it map to a nice local URL like https://myapp.test, with support for custom domains too if I want one. It should also let me route paths like /api or /ws to different local ports, and manage multiple services from one config file so I can start everything at once or stop it all later.

If you can, also add a way to share a local server on a public URL for a quick demo, with options like a custom subdomain, password protection, and automatic expiry. It would be great to have simple commands for listing running domains, checking logs, running a health check, and uninstalling everything cleanly when I am done.